STEROIDS

Classification Context

Section:

CHEMISTRY; METALLURGY

Class:

ORGANIC CHEMISTRY

Subclass:

STEROIDS

Scope Notes

Glossary: A-, B-, C- or D-homosteroid A-homosteroid A-homosteroids B-homosteroid B-homosteroids C-homosteroid C-homosteroids D-homosteroid D-homosteroids Compound in which a cyclopenta[a]hydrophenanthrene skeleton is modified by expansion of rings A, B, C or D correspondingly by one atom (the prefix "homo" may also mean that one methyl or methylene group is added in certain position, e.g. 18-homosteroids). A-, B-, C- or D-bishomosteroid A-bishomosteroid A-bishomosteroids B-bishomosteroid B-bishomosteroids C-bishomosteroid C-bishomosteroids D-bishomosteroid D-bishomosteroids Compound in which a cyclopenta[a]hydrophenanthrene skeleton is modified by expansion of rings A, B, C or D correspondingly by two atoms. A-, B-, C- or D-norsteroid A-norsteroid A-norsteroids B-norsteroid B-norsteroids C-norsteroid C-norsteroids D-norsteroid D-norsteroids Compound in which a cyclopenta[a]hydrophenanthrene skeleton is modified by contraction of rings A, B, C or D correspondingly by one atom (the prefix "nor" may also mean that one methyl group in certain position is substituted by hydrogen atom, e.g. 19-norsteroids, or one methylene group among non-ring members in certain position is absent). A-, B-, C- or D-bisnorsteroid A-bisnorsteroid A-bisnorsteroids B-bisnorsteroid B-bisnorsteroids C-bisnorsteroid C-bisnorsteroids D-bisnorsteroid D-bisnorsteroids compound in which a cyclopenta[a]hydrophenanthrene skeleton is modified by contraction of rings A, B, C or D correspondingly by two atoms. alpha relates to stereoisomers and designates atoms or groups of atoms that are arranged below the plane of a ring system (the bond between such atoms or groups of atoms and a ring system is represented by a dotted line) provided that a cyclopenta[a]hydrophenanthrene skeleton is drawn on the plane so that rings A, B, C and D are arranged from left to right. beta relates to stereoisomers and designates atoms or groups of atoms that are arranged above the plane of a ring system (the bond between such atoms or groups of atoms and a ring system is represented by a thick or uninterrupted line) provided that a cyclopenta[a]hydrophenanthrene skeleton is drawn on the plane so that rings A, B, C and D are arranged from left to right. Bile acids Steroids having a hydroxy-group and a five-carbon-atom side-chain terminating in a carboxyl group, e.g. cholic acid. Normal steroid normal steroids Compound containing non-modified cyclopenta[a]hydrophenanthrene skeleton. Seco-steroid Seco-steroids Compound which can be obtained from steroids by a break of one of the bonds in cyclopenta[a]hydrophenanthrene skeleton. Sterols sterol Steroid alcohols; contain cyclopenta[a]hydrophenanthrene skeleton plus an 8 to 10-carbon atom side-chain and a hydroxy-group, e.g. cholesterol, ergosterol". Substitution of steroids in certain position means substitution of hydrogen atom bound to the carbon atom of the cyclopenta[a]hydrophenanthrene skeleton in that position. | Limiting references: Seco-steroids Fermentation or enzyme-using processes to synthesise steroids Electrolytic production of organic compounds

Related Keywords

Child Classifications

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• C07J 1/00 Normal steroids containing carbon, hydrogen, halogen, or oxygen, not substituted in position 17 beta by a carbon atom, e.g. oestrane, androstane
• C07J 11/00 Normal steroids containing carbon, hydrogen, halogen, or oxygen, not substituted in position 3
• C07J 13/00 Normal steroids containing carbon, hydrogen, halogen, or oxygen, having a carbon-to-carbon double bond from or to position 17
• C07J 15/00 Stereochemically pure steroids containing carbon, hydrogen, halogen, or oxygen, having a partially or totally inverted skeleton, e.g. retrosteroids, L-isomers
• C07J 17/00 Normal steroids containing carbon, hydrogen, halogen, or oxygen, having an oxygen-containing hetero ring not condensed with the cyclopenta[a]hydrophenanthrene skeleton
• C07J 19/00 Normal steroids containing carbon, hydrogen, halogen, or oxygen, substituted in position 17 by a lactone ring
• C07J 21/00 Normal steroids containing carbon, hydrogen, halogen, or oxygen, having an oxygen-containing hetero ring spiro-condensed with the cyclopenta[a]hydrophenanthrene skeleton
• C07J 3/00 Normal steroids containing carbon, hydrogen, halogen, or oxygen, substituted in position 17 beta by one carbon atom
• C07J 31/00 Normal steroids containing one or more sulfur atoms not belonging to a hetero ring
• C07J 33/00 Normal steroids having a sulfur-containing hetero ring spiro-condensed or not condensed with the cyclopenta[a]hydrophenanthrene skeleton
• C07J 41/00 Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
• C07J 43/00 Normal steroids having a nitrogen-containing hetero ring spiro-condensed or not condensed with the cyclopenta[a]hydrophenanthrene skeleton
• C07J 5/00 Normal steroids containing carbon, hydrogen, halogen, or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane, and substituted in position 21 by only one singly bound oxygen atom
• C07J 51/00 Normal steroids with unmodified cyclopenta[a]hydrophenanthrene skeleton not provided for in groups
• C07J 53/00 Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by condensation with carbocyclic rings or by formation of an additional ring by means of a direct link between two ring carbon atoms
• C07J 61/00 Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by contraction of only one ring by one or two atoms
• C07J 63/00 Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by expansion of only one ring by one or two atoms
• C07J 65/00 Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by contraction of two rings, each by one atom
• C07J 67/00 Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by expansion of two rings, each by one atom
• C07J 69/00 Steroids in which the cyclopenta[a]hydrophenanthrene skeleton has been modified by contraction of only one ring by one atom and expansion of only one ring by one atom
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